HP

I recently ‘enjoyed’ working on an issue where a 3PAR remote copy group issue resulted in both virtual volumes entering a read-only state. I’ve seen a similar problem where both copies go into a read-write state which is probably more worrying when it happens. Let’s take a look at the problem, the data I had … Read more

I still remember being impressed with the design and architecture of the HPE 3PAR storage system all those years ago when going through a tender process for a replacement SAN. Over time new versions of the hardware and software have been released and again I’ve been impressed and excited to see the new possibilities. I … Read more

Well HPE Discover in London was awesome – I must have left an impression last year as various HPE reps around the event remembered me. There was so much to see and I wish I’d taken more pictures but I spent more time talking to people. Let’s take a look at some of the pictures … Read more

The SSL/TLS certificates on my HPE (Hewlett Packard Enterprise) C7000 blade chassis expired this week and therefore required replacing. I’m a strong believer in always replacing certificates with valid ones generated by a certificate authority (CA). In my mind there isn’t much excuse in a business to not have an internal CA for this sort … Read more

I came across this issue while reviewing the output of the checkhealth –detail command run from the 3PAR command line. This command provides a more detailed view (as per the switch) of any health issues including those experienced in the Logical Disk (LD) subsystem. The specific error ‘LDs not mapped to a volume’ may happen … Read more

I recently setup a DNS iApp on the F5 load balancers in my datacenters and felt it was time to migrate the Hewlett Packard Enterprise (HPE) 3PAR storage arrays DNS to point to this new virtual IP (VIP) rather than to the static DNS server it currently used. I will demonstrate the command line syntax for … Read more

I finally got round to looking at a problem which has existed in one of my datacenters for I guess a few years now. It’s really bothered me for a long time but I’ve just been tied up with other projects so it remained. I have two datacenters which are more or less identical in … Read more

I’m in the process of deploying updates to a number of VMware ESXi hosts and came across an interesting fault today. When attempting to deploy updates through VMware vCenter Update Manager (VCUM) I was greeted with the following error message – Cannot download software packages from patch source. Check the events and the Update Manager … Read more

All of the servers in question run VMware ESXi 5.5 and are Hewlett Packard Enterprise (HPE) DL360 Gen8 rack mount servers with SD cards as storage for the ESXi image. None of the servers had ceased functioning while running … Read more

I’m currently working on a case with HPE (Hewlett Packard Enterprise) 3PAR support with regard to excessive retransmit errors on our Remote Copy Fibre Channel (RCFC) connection between two 7400 arrays. While troubleshooting we found that a required option was not set appropriately – namely interrupt coalescing on the RCFC ports. In this post I … Read more